Originally Posted by
Spoonrobot
We were getting FD-5801 way earlier than I expected. The improved derailleur is much better but
AFAIK is not as widespread on OEM bikes, yet.
That change seemed to be primarily for two reasons: more clearance for fatter tires (gravel) and to accommodate the new cranksets with chainrings that are a little further apart (primarily to address chainline issues with disc frames). Makes sense to prioritize putting them on disc/gravel bikes rather than the typical rim brake road bike.